From 7ca1ee604c2269389ee00990dd8f7c375df3be06 Mon Sep 17 00:00:00 2001 From: Chris Morgan Date: Fri, 28 Jan 2022 17:39:54 -0600 Subject: [PATCH] drm/vc4: dpi: Support DPI interface in mode3 for RGB565 Add support for the VC4 DPI driver to utilize DPI mode 3. This is defined here as xxxRRRRRxxGGGGGGxxxBBBBB: https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#parallel-display-interface-dpi This mode is required to use the Geekworm MZP280 DPI display. Signed-off-by: Chris Morgan Reviewed-by: Dave Stevenson --- drivers/gpu/drm/vc4/vc4_dpi.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/gpu/drm/vc4/vc4_dpi.c +++ b/drivers/gpu/drm/vc4/vc4_dpi.c @@ -191,6 +191,10 @@ static void vc4_dpi_encoder_enable(struc dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3, DPI_FORMAT); break; + case MEDIA_BUS_FMT_RGB565_1X24_CPADHI: + dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_2, + DPI_FORMAT); + break; } } else { /* Default to 18bit if no connector found. */